Compaq Armada 1500 - Page 173

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Modem Commands C-3
Table C-1 Continued
Command Description
Nn Modulation Handshake. ATNn controls whether or not the local modem
performs a negotiated handshake at connection time with the remote
modem when the communication speeds of the two modems are
different.
Parameters: n = 0, 1
n = 0 When originating or answering, handshake only at the
communication standard specified by S37 and the ATB command.
n = 1 When originating or answering, begin the handshake only at the
communication standard specified by S37 and the ATB command.
During handshake, fallback to a lower speed may occur (default).
On Online Command. ATOn forces the modem to the online mode.
Parameters: n = 0, 1, 3
n = 0 Go online
n = 1 Go online and initiate equalizer retrain before returning to online
data mode
n = 3 Go online and issue a rate renegotiation before returning to
online data mode
NOTE: Use this command to return to the online mode after "escaping"
to the command mode.
P Pulse Dial. ATP sets the dialing mode to Pulse. All calls will remain
Pulse until Tone dialing is selected (T command).
This command can also be used as a dial modifier.
Parameters: none
NOTE: Pulse dialing is not available in some countries. The P
command is ignored in those countries.
Qn Result Code Suppression. ATQn enables the modem to send result
codes.
Parameters: n = 0, 1
n = 0 Enables result codes (default)
n = 1 Disables return of result codes (quiet)
Sr=n Write to an S Register. ATSr=n sets register "r" to the value "n." The
contents of these registers can be modified with this command.
Parameters: none
Range: r = 0 - 27, 29, 31 - 33, 35, 37, 89 (register number)
n = 0 - 255 (value)
NOTE: Writing to reserved registers or read-only registers may cause
unpredictable results. See the S Resigister command set registers.